Table 1.
MS and MSn data (negative or positive ionization modes) of the compounds identified in Moradyn cob extract (CE). Compounds are reported in order of elution; * positive ionization mode; a compared with standard compounds.
| Compound | Rt (min) | Precursor Ion (m/z) | HPLC-ESI-MSn m/z (% of Base Peak) | Compound Identity |
|---|---|---|---|---|
| 1 a | 5.92 | 449 * | MS2[449]: 287(100) | cyanidin-3-O-glucoside |
| 2 a | 6.41 | 433 * | MS2[433]: 271(100) | pelargonidin-3-O-glucoside |
| 3 a | 6.53 | 431 | MS2[431]: 269 (100), 268 (85) | apigenin-7-O-glucoside |
| 4 a | 8.23 | 463 * | MS2[463]: 301(100) | peonidin-3-O-glucoside |
| 5 | 8.49 | 641 | MS2[641]: 479(100), 317(27) MS3[479]: 317(100) |
myricetin-3,7-di-O-hexoside |
| 6 | 8.70 | 459 | MS2[459]: 235(30), 193(100), 149(30) | ferulic acid derivative |
| 7 | 9.77 | 479 | MS2[479]: 317(100), 316(5), 299(70) | myricetin-7-O-hexoside |
| 8 | 10.67 | 367 | MS2[367]: 191(100), 173(20) MS3[191]: 172(40), 127(80), 85(100) |
5-O-feruloylquinic acid |
| 9 | 11.00 | 639 | MS2[639]: 477(100), 315(5) MS3[477]: 315(100), 300(10) |
isorhamnetin-3,7-di-O-hexoside |
| 10 | 15.76 | 609 | MS2[609]: 463(5), 301(100), 300(50) | quercetin-7-O-p-cumaroylhexoside |
| 11 a | 17.17 | 463 | MS2[463]: 301(100), 300(30) | quercetin-7-O-glucoside |
| 12 | 17.97 | 609 | MS2[609]: 447(100), 285(30) | keampferol-3,7-di-O-hexoside |
| 13 | 19.97 | 533 | MS2[533]: 447(26), 285(100), 284(38) MS3[285]: 267(15), 257(100), 241(25), 199(10), 163(5) |
keampferol-7-O-(6”-O-malonyl)-hexoside |
| 14 | 20.66 | 593 | MS2[593]: 447(70), 285(100), 257(15) MS3[285]: 267(15), 257(100), 241(10), 199(20) |
keampferol-7-O-rutinoside |
| 15 | 21.85 | 623 | MS2[623]: 477(20), 315(100) MS3[315]: 300(100) |
isorhamnetin-7-O-rutinoside |
| 16 | 22.24 | 447 | MS2[447]: 327(20), 285(100), 284(85), 257(30), 255(5) | kaempferol-7-O-glucoside |
| 17 | 23.26 | 477 | MS2[477]: 315(35), 314(100) MS3[315]: 300(100) |
isorhamnetin-3-O-hexoside |
| 18 a | 27.52 | 447 | MS2[447]: 285(100), 284(95), 151(10), 133(6) MS3[285]: 267(40), 257(20), 241(40), 199(10), 175(100) |
luteolin-7-O-glucoside |
| 19 | 33.87 | 785 | MS2[785]: 609(20), 447(100) MS3[447]: 285(100), 284(80) |
kaempferol-3-O-hexosyl-7-O-glucuronilhexoside |
| 20 | 34.67 | 815 | MS2[815]: 639(60), 477(100) MS3[477]: 315(100), 300(10) |
isorhamentin-3-O-hexosyl-7-O-glucuronilhexoside |